4 # Copyright © 2015-2021 the original authors.
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
10 # https://www.apache.org/licenses/LICENSE-2.0
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
19 ##############################################################################
21 # Gradle start up script for POSIX generated by Gradle.
23 # Important for running:
25 # (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
26 # noncompliant, but you have some other compliant shell such as ksh or
27 # bash, then to run this script, type that shell name before the whole
32 # Busybox and similar reduced shells will NOT work, because this script
33 # requires all of these POSIX shell features:
35 # * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
36 # «${var#prefix}», «${var%suffix}», and «$( cmd )»;
37 # * compound commands having a testable exit status, especially «case»;
38 # * various built-in commands including «command», «set», and «ulimit».
40 # Important for patching:
42 # (2) This script targets any POSIX shell, so it avoids extensions provided
43 # by Bash, Ksh, etc; in particular arrays are avoided.
45 # The "traditional" practice of packing multiple parameters into a
46 # space-separated string is a well documented source of bugs and security
47 # problems, so this is (mostly) avoided, by progressively accumulating
48 # options in "$@", and eventually passing that to Java.
50 # Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
51 # and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
52 # see the in-line comments for details.
54 # There are tweaks for specific operating systems such as AIX, CygWin,
55 # Darwin, MinGW, and NonStop.
57 # (3) This script is generated from the Groovy template
58 # https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
59 # within the Gradle project.
61 # You can find Gradle at https://github.com/gradle/gradle/.
63 ##############################################################################
65 # Attempt to set APP_HOME
67 # Resolve links: $0 may be a link
70 # Need this for daisy-chained symlinks.
72 APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
75 ls=$( ls -ld "$app_path" )
78 /*) app_path=$link ;; #(
79 *) app_path=$APP_HOME$link ;;
83 # This is normally unused
84 # shellcheck disable=SC2034
85 APP_BASE_NAME=${0##*/}
86 APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
88 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
89 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
91 # Use the maximum available, or set MAX_FD != -1 to use that value.
105 # OS specific support (must be 'true' or 'false').
110 case "$( uname )" in #(
111 CYGWIN* ) cygwin=true ;; #(
112 Darwin* ) darwin=true ;; #(
113 MSYS* | MINGW* ) msys=true ;; #(
114 NONSTOP* ) nonstop=true ;;
117 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
120 # Determine the Java command to use to start the JVM.
121 if [ -n "$JAVA_HOME" ] ; then
122 if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
123 # IBM's JDK on AIX uses strange locations for the executables
124 JAVACMD=$JAVA_HOME/jre/sh/java
126 JAVACMD=$JAVA_HOME/bin/java
128 if [ ! -x "$JAVACMD" ] ; then
129 die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
131 Please set the JAVA_HOME variable in your environment to match the
132 location of your Java installation."
136 which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
138 Please set the JAVA_HOME variable in your environment to match the
139 location of your Java installation."
142 # Increase the maximum file descriptors if we can.
143 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
146 # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
147 # shellcheck disable=SC3045
148 MAX_FD=$( ulimit -H -n ) ||
149 warn "Could not query maximum file descriptor limit"
154 # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
155 # shellcheck disable=SC3045
156 ulimit -n "$MAX_FD" ||
157 warn "Could not set maximum file descriptor limit to $MAX_FD"
161 # Collect all arguments for the java command, stacking in reverse order:
162 # * args from the command line
163 # * the main class name
165 # * -D...appname settings
166 # * --module-path (only if needed)
167 # * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
169 # For Cygwin or MSYS, switch paths to Windows format before running java
170 if "$cygwin" || "$msys" ; then
171 APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
172 CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
174 JAVACMD=$( cygpath --unix "$JAVACMD" )
176 # Now convert the arguments - kludge to limit ourselves to /bin/sh
180 -*) false ;; # don't mess with options #(
181 /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
186 arg=$( cygpath --path --ignore --mixed "$arg" )
188 # Roll the args list around exactly as many times as the number of
189 # args, so each arg winds up back in the position where it started, but
192 # NB: a `for` loop captures its iteration list before it begins, so
193 # changing the positional parameters here affects neither the number of
194 # iterations, nor the values presented in `arg`.
195 shift # remove old arg
196 set -- "$@" "$arg" # push replacement arg
200 # Collect all arguments for the java command;
201 # * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
202 # shell script including quotes and variable substitutions, so put them in
203 # double quotes to make sure that they get re-expanded; and
204 # * put everything else in single quotes, so that it's not re-expanded.
207 "-Dorg.gradle.appname=$APP_BASE_NAME" \
208 -classpath "$CLASSPATH" \
209 org.gradle.wrapper.GradleWrapperMain \
212 # Stop when "xargs" is not available.
213 if ! command -v xargs >/dev/null 2>&1
215 die "xargs is not available"
218 # Use "xargs" to parse quoted args.
220 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.
222 # In Bash we could simply go:
224 # readarray ARGS < <( xargs -n1 <<<"$var" ) &&
225 # set -- "${ARGS[@]}" "$@"
227 # but POSIX shell has neither arrays nor command substitution, so instead we
228 # post-process each arg (as a line of input to sed) to backslash-escape any
229 # character that might be a shell metacharacter, then use eval to reverse
230 # that process (while maintaining the separation between arguments), and wrap
231 # the whole thing up as a single "set" statement.
233 # This will of course break if any of these variables contains a newline or
234 # an unmatched quote.
238 printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
240 sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |